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https://github.com/c64scene-ar/llvm-6502.git
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3080d23fde
Add the current PEI register scavenger as a parameter to the processFunctionBeforeFrameFinalized callback. This change is necessary in order to allow the PowerPC target code to set the register scavenger frame index after the save-area offset adjustments performed by processFunctionBeforeFrameFinalized. Only after these adjustments have been made is it possible to estimate the size of the stack frame. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177108 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
//==- MSP430FrameLowering.h - Define frame lowering for MSP430 --*- C++ -*--==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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//
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//
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//===----------------------------------------------------------------------===//
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#ifndef MSP430_FRAMEINFO_H
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#define MSP430_FRAMEINFO_H
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#include "MSP430.h"
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#include "MSP430Subtarget.h"
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#include "llvm/Target/TargetFrameLowering.h"
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namespace llvm {
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class MSP430Subtarget;
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class MSP430FrameLowering : public TargetFrameLowering {
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protected:
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const MSP430Subtarget &STI;
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public:
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explicit MSP430FrameLowering(const MSP430Subtarget &sti)
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: TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 2, -2), STI(sti) {
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}
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/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
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/// the function.
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void emitPrologue(MachineFunction &MF) const;
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void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
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void eliminateCallFramePseudoInstr(MachineFunction &MF,
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MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const;
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bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const std::vector<CalleeSavedInfo> &CSI,
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const TargetRegisterInfo *TRI) const;
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bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI,
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const std::vector<CalleeSavedInfo> &CSI,
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const TargetRegisterInfo *TRI) const;
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bool hasFP(const MachineFunction &MF) const;
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bool hasReservedCallFrame(const MachineFunction &MF) const;
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void processFunctionBeforeFrameFinalized(MachineFunction &MF,
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RegScavenger *RS = NULL) const;
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};
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} // End llvm namespace
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#endif
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